/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden; /* 默认禁止滚动 */
}

body {
    font-family: 'Microsoft YaHei', '微软雅黑', sans-serif;
    line-height: 1.6;
    color: #333;
    background: url('./images/背景.jpg') no-repeat center center fixed;
    background-size: cover;
    position: relative; /* 添加相对定位 */
}

/* 头部样式 */
.header {
    background-color: rgba(192, 224, 240, 0.9);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    width: 100%;
    padding: 1rem 5%;
    display: flex;
    align-items: center;
    justify-content: space-between;  /* 在logo和社交按钮之间创建空间 */
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.logo-image {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;  /* 防止图片被压缩 */
    transition: transform 0.3s ease;  /* 添加过渡效果 */
    cursor: pointer;  /* 添加手型光标 */
}

.logo-image:hover {
    transform: scale(1.2);  /* 鼠标悬停时放大1.2倍 */
}

.logo-image.rotate {
    animation: rotate360 1s linear;  /* 添加旋转动画 */
    transform: scale(1.2);  /* 保持放大状态 */
}

@keyframes rotate360 {
    from {
        transform: scale(1.2) rotate(0deg);  /* 从放大状态开始旋转 */
    }
    to {
        transform: scale(1.2) rotate(360deg);  /* 旋转结束时保持放大 */
    }
}

.logo-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c3e50;
    white-space: nowrap;  /* 防止文字换行 */
}

.nav-links {
    display: none;
}

.social-links {
    display: flex;
    gap: 1rem;  /* 减小图标间距 */
}

.social-icon {
    width: 35px;  /* 稍微减小图标尺寸 */
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.social-icon:hover {
    transform: translateY(-3px);
}

.social-icon img {
    width: 20px;  /* 调整图标大小 */
    height: 20px;
    object-fit: contain;
}

.bilibili-icon {
    background-color: #00A1D6;
}

.weibo-icon {
    background-color: #E6162D;
}

.twitter-icon {
    background-color: #000000;
}

/* 主要内容区域 */
.main-content {
    margin-top: 80px;
    margin-bottom: 180px; /* 减小底部边距 */
    min-height: calc(100vh - 80px - 180px);
    position: relative;
    z-index: 1;
    height: calc(100vh - 260px); /* 调整固定高度 */
    overflow-y: auto; /* 内容过多时在main-content内部滚动 */
}

.hero {
    padding: 4rem 2rem;
    text-align: center;
    margin-bottom: 3rem;
}

.hero-content {
    display: inline-block;
    padding: 2rem 3rem;
    background: rgba(192, 224, 240, 0.25);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(192, 224, 240, 0.3);
    border: 1px solid rgba(192, 224, 240, 0.4);
    transition: all 0.3s ease; /* 添加过渡效果 */
}

.hero-content:hover {
    background: rgba(192, 224, 240, 0.1); /* 降低背景不透明度 */
    backdrop-filter: blur(0px); /* 移除模糊效果 */
    -webkit-backdrop-filter: blur(0px);
    border: 1px solid rgba(192, 224, 240, 0.2); /* 边框也变得更透明 */
    box-shadow: 0 8px 32px 0 rgba(192, 224, 240, 0.2); /* 阴影也变得更透明 */
}

.hero-content:hover h1 {
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.3); /* 增强文字阴影以提高可读性 */
}

.hero-content:hover p {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3); /* 增强文字阴影以提高可读性 */
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(192, 224, 240, 0.5);  /* 使用主题色的阴影 */
}

.hero h1 .text-primary {
    color: #c0e0f0;  /* 恢复主题色 */
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);  /* 深色阴影提高可读性 */
}

.hero h1 .text-white {
    color: #385c78;  /* 使用主题色的深色变体 */
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(192, 224, 240, 0.5);
}

.hero p {
    font-size: 1.2rem;
    color: #385c78;  /* 使用主题色的深色变体 */
    margin: 0;
    text-shadow: 1px 1px 2px rgba(192, 224, 240, 0.5);
    font-weight: 500;
    letter-spacing: 0.5px;  /* 增加字间距提高可读性 */
}

.features {
    max-width: 1400px;
    margin: -3.5rem auto 0 auto;
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    min-height: 300px;
    flex-wrap: wrap;
}

.feature-card {
    background: rgba(192, 224, 240, 0.9);
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 220px;
    height: 60px;
    min-height: 0;
    position: relative;
    cursor: pointer;
    overflow: visible;
}

.feature-img {
    width: 36px;
    height: 36px;
    margin-bottom: 0.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    left: 50%;
    top: 8px;
    transform: translate(-50%, 0) scale(0.5);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.4,0,0.2,1), opacity 0.3s;
    z-index: 3;
}

.feature-card:hover .feature-img {
    transform: translate(-50%, -40px) scale(1.5);
    opacity: 1;
}

.feature-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.feature-card h2 {
    margin-bottom: 0;
    text-align: center;
    font-size: 1.2rem;
    z-index: 2;
    position: relative;
    transition: none;
    color: #2c3e50;
}

.feature-card p {
    color: #385c78;
    text-align: center;
    margin: 0;
    font-size: 0.95rem;
    opacity: 0;
    pointer-events: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    transform: translateY(-10px);
    transition: opacity 0.3s cubic-bezier(0.4,0,0.2,1), transform 0.4s cubic-bezier(0.4,0,0.2,1);
    z-index: 1;
    /* Styles for frosted glass background */
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 8px 12px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.feature-card:hover p {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(10px);
}

.feature-card:hover {
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 4px 24px rgba(44,62,80,0.12);
}

.waiting-card {
    cursor: pointer;
    position: relative;
    overflow: visible;
}

.gif-popup-feature {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    width: 100px;
    height: 100px;
    z-index: 1000;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
}

.gif-popup-feature img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 10px;
}

.waiting-card:hover .gif-popup-feature {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

@media (max-width: 1400px) {
    .features {
        justify-content: center;
        gap: 1.5rem;
        padding: 1.5rem;
    }
    .feature-card {
        width: calc(20% - 1.5rem * 4 / 5);
        max-width: 240px;
    }
}

@media (max-width: 992px) {
    .features {
        flex-direction: column;
        align-items: center;
    }
    .feature-card {
        width: 100%;
        max-width: 220px;
        height: 60px;
    }

    .gif-popup-feature {
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%) scale(0);
    }

    .waiting-card:hover .gif-popup-feature {
        transform: translate(-50%, -50%) scale(1);
    }
}

/* 页脚样式 */
.footer {
    background-color: rgba(192, 224, 240, 0.8); /* 降低不透明度 */
    padding: 1rem 0 0.5rem; /* 减小内边距 */
    position: fixed;
    bottom: 0;
    width: 100%;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem; /* 减小间距 */
}

.footer-section {
    text-align: center;
    position: relative;  /* 添加相对定位 */
}

.gif-popup {
    position: absolute;
    right: 50%;  /* 从右侧改为居中 */
    top: 50%;
    transform: translate(50%, -50%) scale(0);  /* 修改transform以保持居中 */
    opacity: 0;
    display: none;
    z-index: 1000;
    width: 100px;
    height: 100px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.gif-popup.active {
    transform: translate(50%, -50%) scale(1);  /* 修改transform以保持居中 */
    opacity: 1;
}

.gif-popup img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 10px;  /* 添加圆角 */
}

.footer-section h3 {
    margin-bottom: 0.5rem;
    color: #2c3e50;
    font-size: 1rem;
    text-align: center;
}

.footer-section p {
    margin: 0.2rem 0;
    font-size: 0.9rem;
    color: #385c78;
    text-align: center;
}

.friend-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.2rem;
    justify-content: center;
}

.friend-link {
    color: #385c78;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
    text-align: center;
}

.friend-link:hover {
    color: #2c3e50;
    text-decoration: underline;
}

.footer-bottom {
    margin-top: 1rem; /* 减小顶部间距 */
    padding-top: 0.5rem; /* 减小内边距 */
    border-top: 1px solid rgba(44, 62, 80, 0.1);
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    html, body {
        height: auto;
        overflow: auto; /* 移动端允许滚动 */
    }

    .main-content {
        height: auto;
        margin-bottom: 200px; /* 调整移动端底部边距 */
    }

    .footer {
        position: relative; /* 移动端改为相对定位 */
    }

    .nav-container {
        padding: 1rem;
    }

    .logo-text {
        font-size: 1.2rem;
    }

    .social-links {
        gap: 0.5rem;
    }

    .social-icon {
        width: 30px;
        height: 30px;
    }

    .social-icon img {
        width: 15px;
        height: 15px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .friend-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }
}

/* 视频展示区域 */
.video-showcase {
    margin: 2rem auto;
    padding: 0 2rem;
    max-width: 1200px;
}

.section-title {
    text-align: center;
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 2rem;
    text-shadow: 2px 2px 4px rgba(192, 224, 240, 0.5);
}

.video-container {
    position: relative;
    overflow: hidden;
    padding: 1rem 0;
}

.video-scroll {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: 1rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    animation: scroll 60s linear infinite;
    width: fit-content;
}

.video-scroll::-webkit-scrollbar {
    display: none;
}

.video-scroll:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-50% - 0.75rem));
    }
}

.video-scroll::after {
    content: "";
    display: block;
    min-width: 1.5rem;
}

.video-card {
    flex: 0 0 300px;
    text-decoration: none;
    background: rgba(192, 224, 240, 0.1);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(192, 224, 240, 0.2);
}

.video-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 8px 30px rgba(56, 92, 120, 0.15);
}

.video-thumbnail {
    width: 100%;
    height: 168px;
    overflow: hidden;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.video-cover {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 比例 */
    overflow: hidden;
}

.video-cover img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-card:hover .video-cover img {
    transform: scale(1.05);
}

.video-info {
    padding: 1.2rem;
}

.video-info h3 {
    font-size: 1.1rem;
    color: #385c78;
    margin: 0 0 0.5rem 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-info .uploader {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .video-showcase {
        padding: 0 1rem;
    }

    .video-card {
        flex: 0 0 250px;
    }

    .video-thumbnail {
        height: 140px;
    }
}

/* 视频弹窗样式 */
.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 1000px;
    background: rgba(192, 224, 240, 0.1);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 8px 32px 0 rgba(192, 224, 240, 0.2);
    border: 1px solid rgba(192, 224, 240, 0.2);
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.close-modal {
    position: absolute;
    right: -40px;
    top: -40px;
    font-size: 40px;
    color: #fff;
    cursor: pointer;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    transition: transform 0.3s ease;
}

.close-modal:hover {
    transform: rotate(90deg);
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9比例 */
    background: #000;
    border-radius: 10px;
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        padding: 15px;
    }

    .close-modal {
        right: 10px;
        top: -50px;
    }
}

/* 建站鸣谢弹窗样式 */
#thanksModalBg {
  display: none;
  position: fixed;
  z-index: 99998;
  left: 0; top: 0;
  width: 100vw; height: 100vh;
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(2px);
  transition: opacity 0.3s;
  opacity: 0;
}
#thanksModalBg.active {
  opacity: 1;
}
#thanksModal {
  display: none;
  position: fixed;
  z-index: 99999;
  left: 0; top: 0;
  width: 100vw; height: 100vh;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
#thanksModal[style*='display: flex'] {
  pointer-events: auto;
}
#thanksModal .thanks-modal-content {
  margin: auto;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(16px);
  border-radius: 1.5em;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  padding: 2.5em 2em 2em 2em;
  max-width: 90vw;
  max-height: 80vh;
  overflow: auto;
  min-width: 320px;
  animation: thanksPopIn 0.35s cubic-bezier(0.4,0,0.2,1);
  pointer-events: auto;
}
@keyframes thanksPopIn {
  0% { transform: scale(0.85) translateY(40px); opacity: 0; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}
@media (max-width: 600px) {
  #thanksModal .thanks-modal-content {
    min-width: 0;
    width: 96vw;
    padding: 1.2em 0.5em 1em 0.5em;
  }
  #thanksModal h2 {
    font-size: 1.3em;
  }
  #thanksModal h4 {
    font-size: 1em;
  }
}

/* 视频展示区样式 */
.video-section {
    padding: 2rem 0;
    margin: 2rem auto;
    position: relative;
    max-width: 1200px;
    width: 100%;
}

.video-grid {
    display: flex;
    gap: 1.5rem;
    padding: 0 5rem;
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 1rem;
    position: relative;
    width: 100%;
}

.video-grid::-webkit-scrollbar {
    display: none;
}

.video-card {
    flex: 0 0 calc((100% - 4.5rem) / 4); /* 4个卡片，3个间隔 */
    min-width: 260px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(56, 92, 120, 0.1);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 导航箭头样式 */
.nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: none;
    outline: none;
}

.nav-arrow:hover {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    transform: translateY(-50%) scale(1.1);
}

.nav-arrow:active {
    transform: translateY(-50%) scale(0.95);
}

.nav-arrow.left {
    left: -1rem;
}

.nav-arrow.right {
    right: -1rem;
}

.nav-arrow::before {
    content: '';
    width: 14px;
    height: 14px;
    border-top: 2px solid #385c78;
    border-right: 2px solid #385c78;
    display: block;
}

.nav-arrow.left::before {
    transform: rotate(-135deg);
    margin-left: 4px;
}

.nav-arrow.right::before {
    transform: rotate(45deg);
    margin-right: 4px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .video-section {
        padding: 2rem;
    }
    
    .video-grid {
        padding: 0 4rem;
    }
    
    .nav-arrow {
        width: 40px;
        height: 40px;
    }
    
    .nav-arrow.left {
        left: 0;
    }
    
    .nav-arrow.right {
        right: 0;
    }
}

@media (max-width: 1024px) {
    .video-card {
        flex: 0 0 calc((100% - 3rem) / 3); /* 3个卡片，2个间隔 */
    }
}

@media (max-width: 768px) {
    .video-section {
        padding: 1rem;
    }

    .video-grid {
        gap: 1rem;
        padding: 0 3rem;
    }

    .video-card {
        flex: 0 0 calc((100% - 1rem) / 2);
        min-width: 240px;
    }

    .nav-arrow {
        width: 36px;
        height: 36px;
    }

    .nav-arrow.left {
        left: 0.25rem;
    }

    .nav-arrow.right {
        right: 0.25rem;
    }
    
    .nav-arrow::before {
        width: 12px;
        height: 12px;
    }
}

@media (max-width: 480px) {
    .video-card {
        flex: 0 0 calc(100% - 2rem); /* 1个卡片 */
    }
}

/* 移除滚动指示器样式 */
.scroll-indicator {
    display: none;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .video-info {
        padding: 1rem;
    }

    .video-info h3 {
        font-size: 1rem;
    }

    .nav-arrow {
        width: 32px;
        height: 32px;
    }

    .nav-arrow::before {
        width: 10px;
        height: 10px;
    }
}

.live-status {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.8rem;
    color: #808080;
    transition: all 0.3s ease;
}

.live-status.active {
    color: #ff0000;
}

.live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #808080;
    transition: all 0.3s ease;
}

.live-status.active .live-dot {
    background-color: #ff0000;
    animation: pulse 2s infinite;
}

.live-text {
    font-weight: 500;
    letter-spacing: 0.5px;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.2; }
    100% { opacity: 1; }
}